<template>
    <div>
        <div class="search">
            <!-- <span class="iconfont search">&#xe6a2;</span> -->
            <input class="search-input" v-model="keyword" type="text" placeholder="输入城市名或拼音" @click="handleClickInput">
        </div>
        <div class="search-content" ref="search" v-show="hasKeyword">
            <ul>
                <li class="search-item border-bottom"
                 v-for="item of list"
                 :key="item.id"
                 @click="handleCityClick(item.name)"
                >
                    {{item.name}}
                </li>
                <li class="search-item border-bottom" v-show="hasData">
                    没有找到匹配数据
                </li>
            </ul>
        </div>
    </div>
</template>

<script>
import Bscroll from 'better-scroll'
import {mapMutations} from 'vuex'
export default {
  name: 'CitySearch',
  data () {
    return {
      keyword: '',
      list: [],
      timer: null
    }
  },
  props: {
    cities: Object
  },
  watch: {
    keyword () {
      if (this.timer) {
        clearTimeout(this.timer)
      }
      if (!this.keyword) {
        this.list = []
        return
      }
      this.timer = setTimeout(() => {
        const result = []
        for (let i in this.cities) {
          this.cities[i].forEach((value) => {
            if (value.spell.indexOf(this.keyword) > -1 ||
               value.name.indexOf(this.keyword) > -1) {
              result.push(value)
            }
          })
        }
        this.list = result
      }, 100)
    }
  },
  methods: {
    handleClickInput () {
    //   alert('123')
      var Myinput = document.getElementsByClassName('search-input')
      if (Myinput === document.activeElement) { Myinput.placeholder = '' }
    },
    handleCityClick (city) {
      this.changeCity(city)
      this.$router.push('./')
    },
    ...mapMutations(['changeCity'])
  },
  computed: {
    hasData () {
      return !this.list.length
    },
    hasKeyword () {
      return this.keyword
    }
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.search)
  }
}
</script>

<style lang="stylus" scoped>
@import '~styles/varibies.styl';
    // .search
    //     overflow hidden
    //     background :$bgColor
    //     display: flex
    //     .search-input
    //         display block
    //         position relative
    //         // top: .05rem
    //         height :.5rem
    //         left: 1.5rem
    //         width: 5rem
    //         margin-bottom: .1rem
    //         border-radius: .5rem
    //         text-align :center
    //         vertical-align:middle;
    .search
        height :.72rem
        pdding: 0 .1rem
        background: $bgColor
        .search-input
            width: 8.08rem
            height: .62rem
            margin-left:.1rem
            margin-right:.1rem
            lint-height: .62rem
            text-align: center
            border-radius: .1rem
            color: #666
    .search-content
        z-index: 1   //表示层叠顺序
        overflow hidden
        position: absolute
        top: 1.58rem
        left: 0
        right: 0
        bottom: 0
        background: #eee
        .search-item
            line-height: .62rem
            padding-left: .2rem
            color: #666
            background: #fff
</style>
